Android 给Settings 数据库中写值及监听&adb 读取数据库值

#adb 获取settings数据库中的值
secure
Settings.Secure
content://settings/secure
安全性的用户偏好系统设置，第三方APP有读没有写的权限
global
Settings.Global
content://settings/global
所有的编号设置，对系统的所有用户公开，第三方APP有读没有写的权限
system
Settings.system
content://settings/system
包含各种各样的用户偏好系统设置

使用Settings 数据库

package com.ybf.utilit;
import android.R;
import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.provider.Settings;
import android.database.ContentObserver;
import android.os.Handler;
import android.util.Log;
import android.widget.TextView;
public class MainActivity extends Activity {
	private TextView tv_time;
	Broadcast broadcast;
	ChangeContentObserver mChangeContentObserver = null;
	int i = 0;
	/**
	 * 注意：
	 * 如果第三方应用是写不到Setting 数据库的，必须需要系统权限
	 * AndroidMainfest.xml需添加
	 * android:sharedUserId="android.uid.system"
	 * 
	 */
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_list_item);
		tv_time = (TextView) findViewById(R.id.text1);
		// 广播动态改变Setting中值
		broadcast = new Broadcast();
		IntentFilter intentFilter = new IntentFilter();
		intentFilter.addAction("com.setting");
		intentFilter.addAction("com.com");
		registerReceiver(broadcast, intentFilter);
		// 注册监听者
		mChangeContentObserver = new ChangeContentObserver();
		getContentResolver().registerContentObserver(Settings.Global.getUriFor("com.ybf"), true, mChangeContentObserver);
	}
	class Broadcast extends BroadcastReceiver {
		@Override
		public void onReceive(Context context, Intent intent) {
			if (intent.getAction().equals("com.setting")) {
				if (i % 2 == 0) {
					setdata(context, 0);
					Log.e("TAG", "[onrece]set>=0");
					i++;
				} else {
					setdata(context, 1);
					Log.e("TAG", "[onrece]set>=1");
					i++;
				}
			} else if (intent.getAction().equals("com.com")) {
				Log.e("TAG", "[onrece]>getRecorderRear>" + getdata(context));
			}
		}
	}
	/*
	 * 监听值变化
	 */
	class ChangeContentObserver extends ContentObserver {
		public ChangeContentObserver (Handler handler) {
			super(handler);
		}
		public ChangeContentObserver () {
			// TODO Auto-generated constructor stub
			super(new Handler());
		}
		@Override
		public void onChange(boolean selfChange) {
			super.onChange(selfChange);
			Log.d("TAG", "ChangeContentObserver --> onChange(" + selfChange + ") ");
		}
	}
	//Setting 数据库中写值
	public static void setdata(Context cxt, int flag) {
		try {
			Settings.Global.putInt(cxt.getContentResolver(), "com.ybf", flag);
		} catch (Exception e) {
			if (e != null) {
				Log.i("TAG", "setRecorderRear(Context," + flag + ")> " + e.getMessage());
			}
		}
	}
	//Setting 数据库中读取值
	public static int getdata(Context cxt) {
		try {
			return Settings.Global.getInt(cxt.getContentResolver(), "com.ybf", -1);
		} catch (Exception e) {
			if (e != null) {
				Log.i("TAG", "getRecorderRear(Context)> " + e.getMessage());
			}
		}
		return 0;
	}
	@Override
	protected void onDestroy() {
		// TODO Auto-generated method stub
		super.onDestroy();
		unregisterReceiver(broadcast);
		getContentResolver().unregisterContentObserver(mChangeContentObserver);
	}
}